High-pressure grease gun



Nov.' l1, 193D. L. DEUTSCH HIGH PRESSURE GREASE GUN Filed Jul'y 18 1927 2 Sheets-Sheet 1 Nv. 101, 1930. L.. DEUTSCH 1,781,374

HIGH PRESSURE GREASE GUN Filed July 18, 1927 2 Sheets-Sheet 2 Patented Nov. 11, 1930 UNITED STATES PATENT `1 OFFICE i Lne Danielson, or BEAVER, PENNSYLVANIA, AssIGNoR, BY MEsNaAssrGNr/mnrs, fro

'THE WAYNnrnrr-r coiarAriY, or' BALrrrIvronn, MARYLAND, A .oouronAfrloN or i MARYLAND 'Application filed rui-y is,

device and more particularly to fluid pres sure operated grease gun so constructed as to necessary to operate the device In the usual lubricating means new einployed, especiallylubricating means of the grease gun type,l it may frequently become necessary to take the gun apart to load it` during the lubrication of the machine, which iso' course undesirable from the standpoint of lossof time as Well as Wasteof the lubricant under repeated loading, and some of these guns although designed to deliver thelubricant at a higher pressure than `that exerted to opera-te them, still are only manually operated` and Will not positively introduce grease l'betivl-ien parts 'having "small clearances. Further, it is necessary thatthe Whole gun be talzenat or near` the partito be lubri 'p cated Which oftentimes renders the gun very i dnicult to operate as the spacenear the parts to be lubricated may "beyeryconned,

erationlinay be ei'ected'at a distance remoteA "tl'iat will prevent It 'is therefore an object of this invention to provide a dispensingdevice whereby op- `vtrom the device.Y l C y u Another object iste provide a device which `is readily applied to any standard 'orcom` inercial lubricant container and will deliver said lubricant at a materially higher pressure than'that used to operate the device* Still anotlier object is to provide a `device which will 'deliver a' measured amount of lubricant at time 4undera high pressure.

` Yet @another obgfect is to provide a device which Will insure eedinglof lubricant to the dispensing 1nechanism will prevent collection of the lubricant 'in the top of thedevice,

yet will atno time allow an ,excess pressure insaid device. y n

A further object is Eto `'prov-ide a device which will positively operate ftodeliyer Ylluid under pressure, there being lprovision made device iifiopera'tive.` i I i fard grease container; f

Abaldairic'ing off the operating `mechanism which niight render the `HireHirn,essere?, GREASE GUN 1527. serial no. ecam.

application and operation. deliver lubricant under `aV materially greater pressure than ,ldfith these and various `other objects in View the invention may consist Lof certain `novel features of construction and operation as `rvill" be more fully `described and :particularlypointedout `in the specification, drawinfijsand claims appended hereto.

"inthe drawings, wherein like reference characters are used to designate like parts ciligure l is a sectional elevation through the high pressure delivery apparatus asapfnlied to the ordinurv commercial or stami- Figure 2 is a top plauview of the device; Figure is a fragmentary sectional elevation of the operatingl valve and part of the associated high `pressure cylinder, taken sub stantially on the plane "as indicated by the line 3-3of Figure and i llli'gure 4 a fragmentary Asectional elevation oone lot the fastening means for holdinilie top to :tlrecontainer, taken substan- V1ti'ally on theplane as indicatedv by the lino '1l-4l of `Fig-rure 2. `In general, `the ordinary standard or commercia'lvgreasecontainer A isprovided with *aysuitable opening in the top forthe removal ol #the grease, which`` opening may be closed *by a `top Bpro'vided with a suitable fluid y actuating `valve mechanism C, thisvalveoperating suitable mechanism disposed in a cyl- Finder D associated with mechanism C and adapted tobe inserted (through the top into the container, said mechanism being adapted Eto dispensethe cont-ents of the container to tlieparts `to be lubricated through a suitable outlet or hose E;

`More specifically, 'the `commercial lubricant can 10de providedwvith a topll having an opening fl'tlierein adapted to be closed 'for shipping byla suitable top not shown.

After this top is removed, `the `openin `g may `be cflosedby the top 14 Vprnlividfed lvvith a `gasket155 "adapted to seat on the ridge 13 providedlby the `junction of the `top llvith f" the side `of the container furthe purpose of "preventing ll'eallragebetween the top and the l container. The top 14 maybe `rastenel Ato of thecontainer.` v I The top 14v is providedvwitha suitable mounting `16 between which and suitable `tlanges on the valve housing17 there is disposed the iange 18 formed .on thev depending. cylinder 19 adapted to extend into thecon-. tain'er downwardly to a point near the bottom-thereof. The fitting 16 andthe valve'- 'housing 17 are suitably fastened-to each other and to theV top 14by'any means such as the Abolt connections 19 and 20 respectively.

Any yfluid maybe used to opera-te the valve, preferably Vcompressed air being used, and a suitable valve or operating cock 21. tapped or screwethreaded into the'valve housing 17 at A22 is provided'tor controllingthe fluid Y flow tothe housing 217. The liuidisintro duced into a 'valve chamber 2.3 through suitable inlet channels 24 and 275; providedin, the valve housing, there being air controlledY ymeans such as the needle valve 26 for con-y "trolling the flow 'ofv air` into the container through Va Ysuitable Ychannel 28 running throughthevalve housing and the fitting 16, and a threaded valve 27 controlling the flow of air through the channel 25 into thelvalve chamber 23. The bottom 'of theV valvecham# ber is threaded-at 29 and the'springfseat 30 is adapted to lhave-threaded vengagement therewith. The valve stein 31 runs Ydown``v wardly ythrough the valve housing and isA Vprovided with'a valve'disc adapted toseat yiand close communication from theV valvey `chamber 23 to the :container and exhaust.

The valve is provided kwith a "depending portion 33 which serves as a positioning means Y-for the spring 4-34*positionedv between the valve disc v32 vand the'se'at 30 tendinggto keep "f thevalve ,closed. The 'portion 33 may alsoY serve ',-as a ':limiting:` means for preventing the valve-"from 'opening' too tar.'V The valve* fchambercommunicates' around the valve .stem

.f Lwit'h a channel 35`coinmunicating with another channel `36 extend-ing downwardly for admitting-tluidr to the top of the cylinder" 19.

The v channel `35' also communicates with a channel 37. extending upwardly and outfwardly tl'iroughthe housing, pasta groove 38 provided in the valve stem and adapted- 'tot register with thechannel 39,` thereby al-. lowing communicationpwith the Aatmosphere g when Y#the valve is, inclosed' position.

. The top uotithe' valve' housingf'is threaded r Y kat40fand-a suitable guide 41 issecured lto the-valve housing by suitable means such as V'a camor shaped-disc V"44 which cooperates valve stem for I operating the valve, the -motion being imparted to the cam 44 through afis'uitable stem 46 Vactuated by a iexible means such as a chain v47 whichmay be universally operated at a point remote from t-he container 10.y The fitting 16 maybe aper-` tured and threaded at48, the aperture registering with an aperture in thel top 14 leading tothe top of the container, a suitable safety valve 49 being adapted vto be threaded in the`aperture'48 to be used'for'relieving any excess pressure in the' top.l of the container, .the valve being balancedfor any'predetermined pressure; forinstance,seven pounds.V

A low pressure piston 53 is *provided in 4 'the cylinder 19,'said piston lbeing limited in upward movement kby a cushioning' spring 54 and lug55 positioned atV the ftop thereof and cooperating with the seat30, itl being under f 'stood that the low pressure piston is so formed as to prevent leakage past skirt into the cylinder 19.

Fastened tothe piston and running down-` wardly into the cylindenthere is a stemjorf `rigidpiston rod 56, 'provided at its. lower end ywith ahigh pressure. piston 57 adaptedi to operate in the high pressure cylinder 5S positioned by a-suitable support 59 'provid-. ed in thelcylinder 19, which suvpport'is also adapted ,to Yprevent communication between the container-and the part ofthe cylinder 19 above the support 59.y A spring 60 ispositioned y between suitable *shoulders :preferably kprovided-on the V'high pressure cylinder 5S and /a'suitable [disc 61 Yprovided on and secrredftothe rod 56', said springtending to,- force the Vpistons upwardly Ainto inoperative position," It will benoticedthatjthe cyl-Y `inder 19 isgep'ened Jdownw'ardlyat- 62allovi1- Ving communication. between thejhigh .pressure cylinder-*rand the.V container.v AirV opening 63 is'provided inthe high pres'- sure -Icylinder allowing va Vspace 64 lbetween the opening and alone-way valveV 65 1 provided `for closing theb'ottmn part of the high pressure cylinder. rihe valvemay bei heldV in' position any suitable Yspring carf ried by a threaded Screw66 proinlledrinthe bottoni ot'said cylinder. 'Belo-w'the'fvalvc thereis'provided a connection 67 extending* upwardly through an-,aperture in the top 14f' 1 and preferably Ythreaded tothe fitting 16.

Til

The -connection67fi then communicates 'hose by a suitable'pivot l7'1, tl iis litting '79 vproviding a rotatable connection with a 'rigid connectionV or pipe'72 "in turnconnec t; A v. through a. pivot 73 tov av rigid'iittingvhav l the,ni it.42;V 'lheguide i41.i s suitably aper-'f tured at 43 for-'permittingfpropermotion of :delivery nozzle 74 rotatably connected tI to'.1 By this construction, it lwillbe seen that j" i the nozzle 74 has practically agdouble uni-' the piston 3,-, n

Wise lsecured` to the lcylinder 'i9 'and to the A"down into the lubii hitting 1:6 'at that there u l at all ti-ines be a communication through thislittiirfr 'T5 vbetween the' cylinder and A'the atmosphere. A suitable bracket "T7 niay also be provided Suitablyi'astened'to the top lll by `bolts or "other ineens 79 and serving' ias a Vsupportine;

`device for thelioscfGQ, this bracket being *pro-` d with curved faces SO'ior liireventing ting `or linac hoof the hose "69.

In the operation oi'this device, it will "seenthat i-t is only necessary to position and 'fasten the top :"lllto any standard lubricant f container 1'() with the Ycylinder 19 extending nt, alter which coir pressed air coni-iection may be `coupled `through thecoclr .Q1-to the operating valve lmechanism. An operator then lto lubricate V`a part applies-the 'nozzle Tit to a suitable coupling on the parts to belli cated `and Apulls on thechain $37, arcing thevstein causing "the cani Zlit-o rotate, 'forcing the valve 'disc 32downwardly,,unseating Vthe valve '-andlallowinglthe compressed `air to enter rthe housing tlirouglrthe cha-nnelsli and `and into the valve chamber 23; It will i ofcourse be understood that the regulating "Ader/*Vice 27 has been suitably positioned toallow passage of the airfinto 'the chamber 23.

atmosphericchannel or` port 39 so that tlielglhen the valye lhas been depressed, the groove 38 willln'o longer register with the compressed air will travel through ,the/chanf 'nel 35, down `the "channel 33th the 'top' of V fthe piston `53,",causing; Ithe piston `to travel downwardly, `compressing the v'sp-ring- 6G, and

` sure cylindeiz @n thefgdown stroke of the l to 1 power between said pistons, say ofapproxi `torciirgthehigli pressure piston 57 past the opening 63,closi`irgj said opening, and down `intofthe lubricant l'contain` n y *the fhighpressure cylinder 58. `llt will 'be "assumed that a shot' of lubricant `con-` ng portionA 64C of tained inlthe portion 6,4 "of thehigh preslpiston 58, this lubricant will thenbeforced past the valve 65, through the fitting 67,

" past the iittinn" 68," through the liose (39e-nd "out Fthroueh thenozZ-le 74e.Y Y i It has been found;ldesirableto so proportion the low pressure andfhigfh pijessiii'episftons that there will be high Aini'iltiplyi l inatelv thirty; that is,` for every 'one 4pound sure applied tothe piston thirty pounds pressure will 'beapplfiedtothe legi'ease i in the high pressure cylinder 58. The por- -tion "Se` of the uhigh pressure cylinder is so proportioned that the shot will be just suf y iieient `to `'lubricatle'ordinary bearinga it ibcing understood oli course that any nunibcr et l cation betw".eenltliechaniber :23 and E in* (i.)

shots inay be i appli `"toa "bearing` *by ref chaine?, y

iain released,` the spring alyedisc 32,'clos`inlej con uninel thelvalve rises, communication is established between the channel 37 and "the atmospheric port 39 through the groove 38 provided with the `valve stein 3l. Opening this port to the atmosphere allows the spring to move the low and high/pressure cylinders upward, forcing any air contained 'above the loiv pressure cylinder 53 upwardly through chan nels 36 and 37 tothe atmosphere T through port 39. As the hi gli pressure cylinder nieves upwardly, 'the valve 65 will seat preventing any lubricant from returning i the container.

As before pointed out, ltliesafety valve 49 isso constructed as to relieve 'the top of the `container or" any pressurefover approximately seven pounds," which has been found to be the"`pressure 'suiiicient'for moving the lnbii Vcant downwardly. "A positive operation is insured by providingfthe bleed 7`below1the travel of the piston `53,`this `bleedUbei-ng connected directly "to the atmosphere, thereby preventing pressure -roin building up be` tween thepiston 53 andthe 'fitting 59, which `pressure would cause a balance on eit'her side ofthe piston` 53 thereby preventing its operation.

' It'will befunderstood that I do notwish to be limited by the exact `embodiments `of fthe device shown herein which it willbe understood are merely byway of illustration andnot by way of lniitatioinas other and various forms of paitsof the device willof course 'be apparent-to those Chilled inthe Mart.

claimr y i l. In dispensing apparatus, the combinan tion of a lubricant container, acylinder'thereiiidisposed to have access `to substantially the enti re ainount of l lubricant, a piston disposed in said cylinder and retractable ffroin aportion thereof whereby` silibstaliiftia'l'ly a vacuum Aformed in saidportion `for aiding ingress of lubricant thereto, a discharge connection freni said container"havingV eoop'cizitive relationlto said cylinder, a cylinder flisposedad` jacent said firstI named cylinder,` a. piston thereinhaafin'g` cooperative relation to said firstnai-ned piston whereby inoveinent of 4said seconil piston `nieves said first piston, ineens jfor operating said second piston inL chi g a housing` having `c'o'minunication wii said second cyliiider and 'asource oi fluid pressure supoli f 'the coin'iectioi'r between lsaid source `and 'sa ond piston being-noringliaving an exhaust normally' in communication with said second cylinder through a portion of .said valve, said housing having` a passageconnecting saidsource and said container whereby pressure from-said source is applied tothe lubricant therein Jfor tending to move said lubricant toward said ist piston, and means adaptedto Vbe operated,from

, a pointremot-e from said container for moving said valve for connecting said source and said second named piston'and disconnecting said exhaust from said second named piston. 'f 2. A' dispensing unit for, lubricant contain- I ers including a top adapted to'be secured to said cCntainer.said-topzsupporting cylinders extending into said container, a 10W pressure j pistonand ya high pressurey piston controlled by said lo7 vpressure piston, said pistons being operatively-f associated withl said cylinfders,nie`ans cooperating Withsaid high pressure piston whereby lubricant maybe forced out of-sai'd container, luidroperating means forjsaid 10W pressure Vpistoncomprising a *fluid connection, an` operating valve movable 'l namedfmeans including apivotally mounted by a Amovementof translation, means for operating said .operating valve, said last Scam; engaging saidvvalve for controlling op- ,cam fromriany. of aiplurality ol directions.

'erationthereoi said cam,l having an "elongated member for Vremotely ,operating `,said

3, In a device' ofthe character described,

fthe combination of a cylinder ypositioned in liibricantl tovbe VV,disp'ensech'fa piston 'in said' y'a cylinder havingflaccess to -s'aid lubricant,

cylinder adapted tol actuate another piston, said latterjpistonbeingadapted to travel inv vmovement oit' said lattersQpistonj-serving to cause thelpijston to close access toj said lubri- .cant and` to expel lubricant from. said -latter l ,cylinderto discharge meansassociated with saidlattercylinder, means for operating said I. iir'stnamed pistonfincluding alvalve housing i communicating fivith'V said first namedcylin;

ving forY controlling flow of'fluid to said irst4 namedV piston.

der, and a fluid actuating valve 'in said hous- `41 In a device ofthe character described,

ythe combination ofV a`v cylinder .positionedin 'lubricant to be dispensed', a plurality oljpistons .disposedin saidv cylinder, afcylinder disposedin and supported by saidcylinder cooperatingvvitlr one-of Asaidf-,pist'ons,' saidilatvter cylinder having 'a port ,fori introduction of saidlubric'ant and an'otherl port for-{dis- 'charge ofsaid lubricant, one ofr'saidiports loe-YV ing controlledby the'positionxofl said jplston, 'i

comember associated 'Withi said-f last nanr'iedf operating means-for one of said. pistons includingnieansior controlling movement of one oit-*saidV pistons andi-an elongated link means and extendingto a fpoint Yremote from fl said device for operating said-V lastnamedj means, andl meansv for Vreturning said-pistons to. inoperative -positionll 7. In la device of the character- 5. InY a deviceY of the character described,

vthe combination of a container, a cover 'there- `for, a valve hou-sing, ailuid actuating valve therein, an elongated linkrmember on the housing extendingto a point remote from the container tor operating said valve, a cylinder extending-into said container, a piston in said cylinder adapted to becontrolle-d by'said f valve, acylinder disposed in said'lirstinamed cylinder land* communicating with said container, a piston iii said cylinder adapted to be actuated by said lirst named piston, a part of saidfsecond named cylinder communicating with an outlet through acne-Way valve',

vand a connection betaveenl saidl first named cylinder and the-atmosphere vbetween said cating ivith'said inlet connection', apiston in said cylinder operated bysaid valve, a cylin- 'der insaid-lirst named cylinder, supporting means for said cylinderv preventing. access `from thecontainer to said lirstt-namedcylinder, a piston in said second named cylinder Y- actuatedy by said first named piston, resilient means disposed in said tirstnamed cylinder and cooperating-,With said lirst named piston Vfor .returning saidpiston to initial operating 'posit-icm said second nla-medpiston providing I :means for dispensing from said container character described,

through ,its outlet connectionsby actuation oflsaid piston in said second vi'iamed cylinder,

Y,and means in said cover preventing raising the-fluid pressure in the top of said container Y Y described, the combination of a container, alcover thereior,'ia valvehlousing prov-idinginletl'and outabove a predeterminedamount;V i-V c let connections to a cylinder in 'saidcontaineig a valve controlling'saidminlet-androutlet coii- Y Vnections, regulated fluid inlet means to `said Y '115vr let mea-ns being-disposed in said housing and communicating with said v inlet connection, a

pistonin said cylinder, a cylinder insaidiirst valve andthe tophof said container, said innamed cylinder communicating-With .said

container'. and having-a ,valve therein for. c'oii'imiinicationionly with an outlet ineaiissfVV Y, supporting means'or said cylinderlprevent- 1f ingaccessfifromi-the container to saidjirsft named cylinder, a-,r'piston in said I second i' named cylinderlactuated by saidfirst'namedg piston, resilient meansfdisposedin said first. Y

.named VcylinderV and. cooperatingwvith Vsaid lirst named piston lfor returning Vsaid pistonV to initials operating position,k ,saidV second An'amedpiston providing means foremptying LEO DEUTSCH. 

